* apt-pkg/acquire-item.h, apt-pkg/deb/debmetaindex.cc:

  - fix fetching language information by adding OptionalSubIndexTarget

apt-pkg/acquire-item.h

@@ -691,6 +691,14 @@ class OptionalIndexTarget : public IndexTarget
 									/*}}}*/
 /** \brief Information about an subindex index file. */			/*{{{*/
 class SubIndexTarget : public IndexTarget
+{
+   virtual bool IsSubIndex() const {
+      return true;
+   }
+};
+									/*}}}*/
+/** \brief Information about an subindex index file. */			/*{{{*/
+class OptionalSubIndexTarget : public OptionalIndexTarget
 {
    virtual bool IsSubIndex() const {
       return true;

apt-pkg/deb/debmetaindex.cc

@@ -221,7 +221,7 @@ vector <struct IndexTarget *>* debReleaseIndex::ComputeIndexTargets() const {
 	} else {
 		for (std::set<std::string>::const_iterator s = sections.begin();
 		     s != sections.end(); ++s) {
-			IndexTarget * Target = new OptionalIndexTarget();
+			IndexTarget * Target = new OptionalSubIndexTarget();
 			Target->ShortDesc = "TranslationIndex";
 			Target->MetaKey = TranslationIndexURISuffix("Index", *s);
 			Target->URI = TranslationIndexURI("Index", *s);

debian/changelog

@@ -18,6 +18,8 @@ apt (0.8.16~exp5) experimental; urgency=low
   * apt-pkg/contrib/configuration.cc:
     - fix double delete (LP: #848907)
     - ignore only the invalid regexp instead of all options
+  * apt-pkg/acquire-item.h, apt-pkg/deb/debmetaindex.cc:
+    - fix fetching language information by adding OptionalSubIndexTarget
 
  -- Michael Vogt <mvo@debian.org>  Fri, 05 Aug 2011 10:57:08 +0200